Improvement in drop-lights



H. IDEN.

DROP-LIGHT.

1a.'c.enr,ec Feb. 15, 1.876.

Fig. 1a -represents a modification.

NITED SCrAfrEsA A rErrr EEICE.

HENEY IDEN, or NEW YORK, N. Y.

IMPRovEMl-:NT IN DROP-LIGHTS.

Specication forming part of Letters Patent No. 173,472, dated February 15, 1876; application filed January 22, 1876.

To all whom yt may concern 4 Be it known that I, HENRY IDEN, of- New York city, in thejState of New York, gas-lixture manufacturer, have invented certain new and useful Improvements relating to Drop-- Lights, of which the following is a specilica- My improvements apply to all that class of drop-lights in which a small tubesmootllly finished on the exterior is thrust upward or prolonged downward at will by being held in a Y stuffing-box in the lower end of a tube oflarger of arresting the gas, and the lowermost serves to arrest any downward escape of the lubricatingmaterial, and also performs an important function in .cleanly wiping the pipe and preventing the access of dust and the like to the upper or stuffing box proper. I equip the parts witll simple compressingsprings, which exert a gentle but sufficient pressure upon the surface of the inner pipe, so that the stuffingbox is relieved from its function of pinching and holding up the weight of the parts.

The accompanying drawings form a partof this specification, and represent what I consider the best means of carrying out the invention.

Figure l is a central longitudinal section. Fig. 2 is a horizontal section on the line S S in Fig. l.

Similar letters of reference indicate like parts in all the ligureS.

A is the upper or stationary pipe. B is a substantial washer or ring abutting against the lower end of A, and supporting two sufficiently stiff springs, b b. Thefree ends of these springs are smoothly hollowed on their inner faces and adapted to form afa-ir bearing against the inner tube. D is a rin gformed with notches on its exterior, and threaded upon the tube D, and further secured 'by slightly riveting the upper'end of the latter. The ring D allows i the gas to circulate freelyin the stationary tube,

of oil or grease, ready to be absorbed by the The casting G is.

felt as it shall be required. extended downward and threaded on its exterior. Upon this matches a cap, I,within which andbetween the cap I and the casting G is a space for a second or lower stufng-box,which is filled with cotton J. I form the cavity for the cotton J oblique or conical on both the .upper and lower faces, while the upper stuflingbox H is formed, in effect, square on both, the corresponding faces.

Fig. 1a shows what may by most be regarded as a preferable form of the interior for the chamber of the' main stnflingbox H. It differs from the form shown in Fig. 1,'being contracted or tapered from the top downward, so that when in the act of adjusting the casting G is forced upward. It not only compresses the felt H vertically, but also carries it bodily inward against the tube D.

Many of the details may be modilid by any good mechanic. I have formed the springs b b of steel, and the ring in which they are supported of brass; but they may both be of brass or both of steel. The centering-ring D'on the upper end of the small tubeD may be efficiently attached by simply soldering. The function of this ring is specially important when the drop-light is forcibly strained to one vside or the other in the extended condition. The wrenching and distortion of the stuffing-box due to the angularA positions assumed by the smaller tube under such conditions are mainly or entirely prevented by this ring, while, being notched, it offers no appreciable resistance to the ready adjustment of the parts.

Two stuing-boxes are capable of being tightened or compressed separately. 'Io compress the upper or main stuiiingibox H the lier are to be thus lowered and raised. It mayv also be used in those cases where a center light is lowered and raised relativelyto a fixed chandelier.

I claim as my invention- 1. In combination with the stationary tube A and smaller movable tube D, the centering ring D', corrugated or notched, so as to allow a free passage ofthe gas, and adapted to serve as and for the purposes specified.

2. The annular oil-recess h, in combination with the packing and with the tubesA D and adjustable casting or piece G, as and for the purposes specified. l

3. The double stufng-box H J and double 'adjustments G I, combined and arranged to serve relatively to the stationary tube A and movable tube D of a drop-light, as and for the purposes specified.

In testimony whereof I have hereunto set my hand this 21st day of January, 1876, in the presence of two subscribing Witnesses.

HENRY IDEN.

Witnesses:

C. C. SrETsoN, THOMAS D. STETsoN. 

